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Allen Bradley 140G MCB 140G-JTF3-D20

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140G-JTF3-D20

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The 140G-JTF3-D20 is a robust molded case circuit breaker designed by Allen-Bradley within the Rockwell Automation group. This unit features a JC frame, support for a rated current of 250 Amps, and offers adjustable thermal and magnetic protection, making it versatile in various applications.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 140G-JTF3-D20

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-JTF3-D20
UPC885630442921
Weight3.00 lbs (1.36 kg)
FrameJC
Amps250
Interrupting RatingTrip Unit
Protection TypeAdjust Thermal/ Adjust Magnetic
Current Range200 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The 140G-JTF3-D20 circuit breaker from Allen-Bradley serves as a key component in many electrical systems. With a maximum operational capacity of 250 Amps, this molded case circuit breaker is categorized under the JC frame size. It employs an adjustable thermal and magnetic protection type, essential for adapting to changing load conditions.

The interrupting rating is driven by the trip unit design, which offers robust protection against overloads and faults. It supports applications centered around a current range of 200 A, optimizing its functionality in diverse environments.

Additionally, the rated insulation voltage extends up to 1000 volts, providing reliability in high-voltage implementations. The breaker can handle impulse withstand voltages reaching 8 kV, important for maintaining system integrity against transient conditions.

Weighing 5.51 pounds, the unit is engineered for mechanical efficiency and durability. Its mechanical operational life is rated at 240 operations per hour, while it maintains an electrical life of 120 operations per hour, signifying its suitability for frequent use in various industrial applications.

Revision Part #Also known as
140G-JTF3-D20 Ser A140G-JTF3-D20/A, Series A, Rev A
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